The Wyoming Game and Fish Department has announced they will permanently close Jessica’s Pond, a popular community fishery in the Casper Region, this month following the confirmation of invasive New Zealand mudsnails in October 2025.
According to the department, the pond will be filled in and the area reclaimed to eliminate the threat of further spread. Officials said a full assessment of the site determined the risk, along with the pond’s proximity to the Dan Speas Fish Hatchery, was too great to allow the pond to remain open.
“We recognize the importance of this location as a community fishery and popular recreation spot,” Game and Fish Chief of Fisheries Alan Osterland said. “However, the rate of spread from these invasive snails has led us to the decision to permanently close the location and reclaim the site to prevent further spread.”
While mudsnails are present in the North Platte River, the Dan Speas Fish Hatchery remains clear of the invasive species. The North Platte River – Wyoming Flycasters Memorial Public Access Area, adjacent to the hatchery, will remain closed due to mudsnail concerns.
Game and Fish said the Casper Region continues to offer world-class angling opportunities along the North Platte River. For anglers seeking accessible options, Yesness Pond in Casper features ADA-compliant trails and access points and serves as an alternative to Jessica’s Pond. Maps, regulations and access information for Wyoming fishing locations are available on the Game and Fish website.
Anglers are reminded to clean, drain and dry all equipment before moving between waters. Scrubbing stations for boots are located near many fishing access points. Seasonal watercraft inspections are also required for boats entering Wyoming.
More information about aquatic invasive species and prevention efforts is available through the Wyoming Game and Fish website.
